839117 has 2 divisors, whose sum is σ = 839118. Its totient is φ = 839116.

The previous prime is 839087. The next prime is 839131. The reversal of 839117 is 711938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 835396 + 3721 = 914^2 + 61^2 .

It is a cyclic number.

It is not a de Polignac number, because 839117 - 2¹⁰ = 838093 is a prime.

It is a Chen prime.

It is equal to p₆₆₈₂₇ and since 839117 and 66827 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 839117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (839617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419558 + 419559.

It is an arithmetic number, because the mean of its divisors is an integer number (419559).

2⁸³⁹¹¹⁷ is an apocalyptic number.

It is an amenable number.

839117 is a deficient number, since it is larger than the sum of its proper divisors (1).

839117 is an equidigital number, since it uses as much as digits as its factorization.

839117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 29.

The square root of 839117 is about 916.0332963381. The cubic root of 839117 is about 94.3208067151.

The spelling of 839117 in words is "eight hundred thirty-nine thousand, one hundred seventeen".